Coldwell Banker Residential Brokerage can help you find Avoca School District 37, Winnetka, IL homes for sale, condos, rentals and open houses. Refine your Avoca School District 37 real estate search results by price, property type, bedrooms, baths and other features. Need more information? View Coldwell Banker Residential Brokerage Winnetka real estate agents or offices and let us help you find the perfect property. We also have area guides that show more information about properties in Winnetka, IL.